Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6757427 | Edge enhancement preprocessing with image region determining function | — | 2004-06-29 |
| 6701022 | Pattern matching coding device and method thereof | Kouichiro Hirao | 2004-03-02 |
| 6690375 | Line segment detector | Shigetaka Ogawa, Koitiro Hirao, Tamotsu Kusaka | 2004-02-10 |
| 6574367 | Method and apparatus for pattern matching encoding | Mitsutoshi Arai, Kouichirou Hirao | 2003-06-03 |
| 6553144 | Coding method and coding apparatus for bi-level document image | Kouichirou Hirao | 2003-04-22 |
| 6327384 | Character recognition apparatus and method for recognizing characters | Kouichirou Hirao, Keiji Yamada, Takashi Mochizuki, Mitsutoshi Arai | 2001-12-04 |
| 6122402 | Pattern encoding and decoding method and encoder and decoder using the method | Mitsutoshi Arai, Keiji Yamada, Toshihiko Okamura, Kouichirou Hirao | 2000-09-19 |
| 6016361 | Method and apparatus for compressing binary data using pattern matching encoding | Kouichirou Hirao | 2000-01-18 |
| 5872639 | Multi-function facsimile apparatus connectible to computers and communication lines | — | 1999-02-16 |
| 5867600 | Image coding method and system for providing reduced bit rate arithmetic codes | — | 1999-02-02 |
| 5587808 | Image processing apparatus for identifying character, photo and dot images in image area | Hayato Hagihara | 1996-12-24 |
| 5555323 | System for bi-level symbol coding/decoding with saved storage and method for same | — | 1996-09-10 |
| 5491564 | Data compression method and apparatus for binary image using Markov model encoding | — | 1996-02-13 |
| 5319463 | Arrangement and method of preprocessing binary picture data prior to run-length encoding | Kazuhide Yamakawa | 1994-06-07 |